发明授权
- 专利标题： Piezoelectric ceramic composition
- 专利标题（中）： 压电陶瓷组合物
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申请号： US10597366申请日： 2005-02-28
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公开(公告)号： US08142677B2公开(公告)日： 2012-03-27
- 发明人: Masakazu Hirose , Tomohisa Azuma , Norimasa Sakamoto
- 申请人： Masakazu Hirose , Tomohisa Azuma , Norimasa Sakamoto
- 申请人地址： JP Tokyo
- 专利权人： TDK Corporation
- 当前专利权人： TDK Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Pearne & Gordon LLP
- 优先权： JP2004-091866 20040326; JP2004-248352 20040827
- 国际申请： PCT/JP2005/003266 WO 20050228
- 国际公布： WO2005/092817 WO 20051006
- 主分类号： C04B35/00
- IPC分类号： C04B35/00 ; C04B35/495 ; H01L41/18 ; H01L41/187
摘要：
A piezoelectric ceramic composition excellent in all of the electric property Qmax, heat resisting properties and temperature characteristics of oscillation frequencies is provided. The piezoelectric ceramic composition comprises a phase mainly comprising lead zirconate titanate having a perovskite structure and an Al-containing phase. In the piezoelectric ceramic composition, the main component preferably comprises Mn and Nb, and is preferably represented by a composition formula of Pbα[(Mn1/3Nb2/3)xTiyZrz]O3 (wherein 0.97≦α≦1.01, 0.04≦x≦0.16, 0.48≦y≦0.58, 0.32≦z≦0.41).
公开/授权文献
- US20080245990A1 Piezoelectric Ceramic Composition 公开/授权日：2008-10-09
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